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초강력 레이저 과학 연구단
초강력 레이저과학 연구단
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Scalable terahertz generation by large-area optical rectification at 80 TW laser power

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Title
Scalable terahertz generation by large-area optical rectification at 80 TW laser power
Author(s)
Dogeun Jang; Chul Kang; Seong Ku Lee; Jae Hee Sung; Chul-Sil Kee; Seung Woo Kang; Ki-Yong Kim
Publication Date
2019-10
Journal
OPTICS LETTERS, v.44, no.22, pp.5634 - 5637
Publisher
OPTICAL SOC AMER
Abstract
We demonstrate high-energy terahertz generation from a large-aperture (75-mm diameter) lithium niobate wafer by using a femtosecond laser with energy up to 2 J. This scheme utilizes optical rectification in a bulk lithium niobate crystal, where most terahertz energy is emitted from a thin layer of the rear surface. Despite its simple setup, this scheme can yield 0.19 mJ of terahertz energy with laser-toterahertz conversion efficiencies of ∼10−4, about 3 times better than ZnTe when pumped at 800 nm. The experimental setup is upscalable for multimillijoule terahertz generation with petawatt laser pumping. © 2019 Optical Society of America
URI
https://pr.ibs.re.kr/handle/8788114/6865
ISSN
0146-9592
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
Files in This Item:
Scalable terahertz_Optics letters(Dr. Seong Ku Lee).pdfDownload

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